class Scores {
  const Scores({
    this.submitTime,
    this.score,
    this.examTime,
    this.highScore,
    this.ranking,
    this.average,
}):assert(submitTime!=null),
assert(score!=null),
assert(examTime!=null),
assert(highScore!=null),
assert(ranking!=null),
assert(average!=null);


 final String submitTime; //提交时间
  final  String score;      //分数
  final String examTime;   //考试时间
  final  String highScore;  //最高分
  final String ranking;    //排名
  final  String average;    //平均分
}


